ELTI is structuring lobbying through the Interinstitutional Transparency Register set up and operated by the European Parliament and the European Commission with the support of the Council of the European Union.

ELTI is working together with:

The Long Term Infrastructure Investors Association (LTIIA): 

Founded in 2014 by investors and for investors, Long Term Infrastructure Investors Association (LTIIA) is a not-for-profit international professional association. Most of its members are institutional investors and fund managers with responsibilities over long-term and open-ended infrastructure investment mandates. The association's action circle includes leading global and regional discussion fora, information powerhouses and service providers to the infrastructure marketplace.

EUROFI: the European think tank dedicated to financial regulation and supervision and a renowned platform for exchanges between the financial services industry and the EU and international public authorities;

Eurofi is a European think tank dedicated to financial services, with the aim of helping to build a fluid, efficient and secure EU Single Capital Market. Eurofi addresses prospective regulatory or industry driven subjects, as well as contentious issues which are currently debated at EU level or are of particular interest to EU industry players. Eurofi acts as a catalyst for the market and as a neutral go-between between industry players and EU Institutions.

The Organisation for Economic cooperation and Development (OECD);

The mission of the Organisation for Economic Co-operation and Development is to promote policies that will improve the economic and social well-being of people around the world. The OECD provides a forum in which governments can work together to share experiences and seek solutions to common problems. OECD works with governments to understand what drives economic, social and environmental change. OECD analyses and compares data to predict future trends.

The Long-Term Investors Club (LTIC); 

In 2009 Caisse des Dépots, Cassa Depositi e Prestiti, the European Investment Bank and Kreditanstalt für Wiederaufbau created the Long-Term Investors Club (LTIC) with the aim of bringing together major worldwide institutions to emphasis common identity as long-term investors, to encourage cooperation and to foster the right conditions for long-term investments in promoting growth. Today the Long-Term Investors Club gathers 18 major financial institutions and institutional investors from all over the world mainly from G20 countries, representing a combined balance sheet total of USD 5.4 trillion.